I'm always wary with Pilar nipples, a quick look in the comments show a guy that broke two of them after five rides.
Maybe they provide brass nipples on request.
Not sure about their hubs, but it looks all hubs coming in Ali are now DT-Swiss-ized.
Other than that, yes great price !
They mention Pillar spokes but not nipples that I saw. They did say "Nipple: Secure Lock" which is sapim.
Anyway, that photo you are talking about, I think the spoke length is way too short, unless the spoke broke off too. The spoke should thread past the wide section of the nipple.